Synthesis of SnO2 nano-sheets by a template-free hydrothermal method

被引：71

作者：

Li, Yue ^{[2
]}

Guo, Yanqun ^{[2
]}

Tan, Ruiqin ^{[1
]}

Cui, Ping ^{[2
]}

Li, Yong ^{[2
]}

Song, Weijie ^{[2
]}

机构：

[1] Ningbo Univ, Fac Informat Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 24-25期

关键词：

Nanomaterials; Hydrothermal; SnO2; Microstructure; Nano-sheets; TIN OXIDE NANOPARTICLES; FACILE SYNTHESIS; GAS SENSOR; MECHANISM; NANOCRYSTALS; NANOSHEETS; EVOLUTION; ETHANOL; GROWTH; SIZE;

D O I：

10.1016/j.matlet.2009.06.060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Square SnO2 nano-sheets have been successfully synthesized by a template-free hydrothermal method basing on the reaction between SnCl2 and NaOH in ethanol/water solution. The products have been characterized by X-ray diffraction, scanning electron microscope, and transmission electron microscope. The size and morphology of nano-sheets could be controlled by changing the ratio of ethanol to water. Compared experiments showed that the addition of NaOH was crucial to the formation of SnO2 nano-sheets, and the addition of glycol could induce the formation of cabbage-like structure. The nano-sheets show a strong absorption peak around 330 nm, corresponding to a band gap value of 3.75 eV. This blue shift of the band gap energy was possibly induced by the spatial confinement of excitons in the nano-sheet structures. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2085 / 2088

页数：4

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